Siemens 80C165 (Asynchronous); Circuit Diagram - Siemens SIMATIC NET SPC 4-2 LF Manual

11.9

Siemens 80C165 (asynchronous)

11.9.1 Circuit Diagram

CLK
WR
RD
Port
READY
Port CS
80C165
DB 15...0
DB
AB
Reset
Figure 11-9 Circuit Diagram
Typ Mode INTEL and SIEMENS 16-/8-bit microcontroller families
•
Asynchronous bus; timing with evaluation of the XREADY signal
•
8-bit non-multiplexed bus: DB(7-0); AB(9-0)
0 0
The following can be connected:
•
Microcontroller families, e.g. SIEMENS, 80C16x and INTEL X86
(asynchronous
Address decoder on the SPC 4-2 is deactivated; CS signal is supplied to the SPC 4-2
INTEL)
•
External address decoding is always required
•
External chip-select logic if this does not exist on the microcontroller
Note:
Bit X86 in mode register 2 must be set for this mode.
PROFIBUS Controller SPC 4®-2 LF
C79000-G8976-C157-3
80C165-System
DB 7...0
AB 23...0
RD WR
Driver, control logic
EPROM RAM
64kB 32kB
12/24 MHz
AB 9...0
Processor Interface
Clock generator
48 MHz
Divider:2/4
XWR
XRD
RTS
X/INT
TxD
XREADY
RxD
XCS
DB
XCTS
(7..0)
1K
SPC4
AB
GND
(9..0)
SPC4
Reset
Mode TYPE
3K
3K
3 3
GND
GND
145